Shell script for modifying python virtualenv scripts after moving them to new location

gistfile1.sh

# When using virtualenvwrapper to manage your python virtual environments,
# if you need to move your virtualenvs to a new location, mostly all that is
# necessary is to modify your shell initialization scripts (~/.bash_profile, etc.)
# But there's a problem waiting to bite you: each virtualenv's activate script has
# the path to the virtualenv hard-coded into it by mkvirtualenv.  So you need
# to edit each one to change this.  Otherwise things will not work after moving
# things to the new location.  This gist is a sample of how to change all the
# virtualenvs at once with a little shell script and sed.  Run this script
# after you've changed the variables in your bash_profile and restarted your
# shell.

OLD_PATH=${1} # first argument is old virtualenv base path e.g. .old-virtualenvs
NEW_PATH=${2} # second argument is new virtualenv base path e.g. .new-virtualenvs

for v in $(find ${WORKON_HOME} -name 'activate' | grep 'bin/activate')
do
    sed -i -e "s:${OLD_PATH}:${NEW_PATH}:g" ${v}
done